`a )` which `->` who

`\rightarrow` Who là ĐTQH dùng để chỉ người

`b )` don't `->` didn't

`\rightarrow` Thì QKĐ ( PĐ ) : S + didn't + V

`\rightarrow` `DHNB` : last

`c )` was `->` Bỏ

`\rightarrow` Thì QKĐ : S + Ved / V2

`\rightarrow` `DHNB` : yesterday

`d )` on `->` in

`\rightarrow` In dùng để chỉ về thời gian ( `VD` : in summer , in July , ... )

`e )` since `->` for

`\rightarrow` Thì HTHT : S + have / has + V3 / PII

`\rightarrow` For + Khoảng thời gian

`\text{# Kirigiri}`

=>

a. which -> who

-> who: đtqh chỉ người

b. don't -> didn't

-> last Sunday (QKĐ, S V2/ed)

c. was understood -> understood

-> yesterday (QKĐ, S V2/ed)

d. on -> in

-> in summer: vào mùa hề

e. since -> for

-> for + khoảng thời gian (HTHT)

-> since + mốc thời gian